Gas generator for fumigation purpose



June 4, 1935. T. FORSBERG GAS GENERATOR FOR FUMIGATION PURPOSE Original Filed Aug. 21, 1953 2 Sheets-Sheet l Inventdr By QM flllorney V June 4, 1935.

T. FORSBERG GAS GENERATOR FOR FUMIGATION PURPOSE Original Filed Aug. 21, 1955 2 Sheets-Sheet 2 Inventor rfzraezy .14 llorney GAS GENERATOR FOR FUMIGATION PURPOSE Ted Forsberg, San Leandro, Calif.

Application August 21,

1933, Serial No. 686,142

Renewed March 20, 1935 1 Claim.

This invention relates to a device for generating gas to be used in fumigating and has as its object the provision of such a device which may be used without danger to the operator.

The invention together with its numerous objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein is illustrated a preferred embodiment of the invention.

It is to be understood at the outset that it is in no wise intended to restrict the invention to the precise details of construction, combination and arrangement of elements, other than may be necessary to meet the requirements of the prior art and scope of the appended claim.

In the drawings:

Figure 1 is an elevational view of a generator embodying the features of the present invention.

Figure 2 is a vertical sectional view, on an enlarged scale, through the device.

Figure 3 is a horizontal sectional view taken substantially on the line 33 of Figure 2.

Figure 4 is a plan view of a pan or plate to be hereinafter more fully referred to.

Referring to the drawings by reference numerals it will be seen that the gas generator comprises a tank 5 of metal or other suitable material, and of acid resisting qualities. The tank 5 may be of any desired size, the size of the tank obviously determining the thickness of the walls thereof.

For the top of the tank 5 there is provided a shell like cover or cap designated generally by the reference numeral 6. Cap 6 comprises a substantially frusto-conical plate 1 and a flat inner end plate 8 connected with the plate I and spaced therefrom through the medium of spaced parallel partitions 9. The partitions 9 are arranged as clearly shown in Figure 3, each partition being fixed at one end to the cover and having its other end spaced from a corresponding portion of the cover with each successive partition fixed at alternate ends for establishing communication between the spaces formed by the partitions in a manner to provide, within the chamber In formed within the cover or lid 6 a tortuous passage leading from the inlet ll provided for the chamber I in the plate 8, to the outlet l2 in the top plate I.

The lid 6 is also provided with a filling neck [3 and the inner end is secured to the plate 8 in any suitable manner, preferably as by being integral therewith. The filling neck l3 extends through the plate 1 of the lid and is provided with a suitable closure 14. A valve I is connected with the outlet l2 and a hose I6 is connected at one end with the valve IS. The free end of the hose I6 is provided with any suitable type of spray nozzle (not shown) for directing the gas into the space or area to be fumigated.

A rod I1 is slidable through a gland structure l8 provided in the cap 6; and to secure the rod H at the desired adjustment there is provided thereon a stop collar IS with which is associated a wing nut 20 to secure the collar at the desired position on the rod [1. The collar I9 is engageable with the gland l8 and cooperates therewith for supporting the rod IT at the desired elevation with respect to the bottom of the tank or container 5.

Provided on the lower or inner end of the rod I1 is a relatively shallow pan or plate 2| the bottom of which is perforated as shown.

In actual practice the tank or receptacle 5 is adapted to contain any suitable liquid chemical 22, the same being introduced into the container 5 through the filling neck l3 and seeks a level approximating that suggested in the drawings. The shallow pan 2! is adapted to contain dry chemicals 23, and normally pan 2| is disposed above the liquid level. To form the fumigating gas rod I! is moved downwardly for lowering the pan 2| into the liquid chemical 22 so that the dry chemicals carried by the pan 22 will combine with the liquid chemicals to generate the gas, which latter, under its own pressure passes into the chamber I!) through the inlet I I. In seeking the outlet l2 the gas in the chamber I0 is caused to travel in a circuitous or tortuous path provided by the partition 9. The provision of the baflies insures thorough separation of the liquid or condensed gas particles. Manifestly the discharge of gas from the chamber In through the hose I6 is manually controlled by the valve l 5.

The dry chemicals are in the form of solid particles so that they cannot pass through the perforations in the pan and even if the pan is wet, the moisture will have little or no eifect on the particles so that the operator will have plenty of time in which to replace the cap l4, after the particles have been placed in the pan, before any gas can form. However, if desired, the operator may wait until the pan has dried before placing the particles therein.

It will be apparent that I have provided a gas generator which is of extremely simple construction at the same time will be thoroughly practical and efiicient in use and operation.

Having thus described my invention, what I claim as new is:

In a generator of the class described, a tank adapted to contain a liquid chemical, a cover for 5 the tank having means for connecting a conduit hose thereto, a rod slidable axially through said cover, and a pan on the inner end of the rod adapted to contain a dry chemical, said cover provided with a gas chamber and a gas inlet for establishing communication between said chamber and the interior of said tank, and partitions arranged in said gas chamber between said gas inlet and the hose connection and providing a tortuous gas passage for the conducting of gas through said chamber.

TED FORSBERG. 

